<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head><body><div data-html-editor-font-wrapper="true" style="font-family: arial, sans-serif; font-size: 13px;">Hello,<br><br>I'm unable to load the wireguard kernel module on Debian Sid or Debian Buster. (4.19.0-5-amd64 kernel)<br>(Debian buster is scheduled to be promoted to stable in a couple of weeks)<br><br>root@buster:~# modprobe wireguard<br>modprobe: ERROR: could not insert 'wireguard': Invalid argument<br>root@buster:~# modinfo wireguard<br>filename: /lib/modules/4.19.0-5-amd64/updates/dkms/wireguard.ko<br>alias: net-pf-16-proto-16-family-wireguard<br>alias: rtnl-link-wireguard<br>version: 0.0.20190601<br>author: Jason A. Donenfeld <Jason@zx2c4.com><br>description: WireGuard secure network tunnel<br>license: GPL v2<br>srcversion: 69000E9D4B2B253E97C189A<br>depends: udp_tunnel,ip6_udp_tunnel<br>retpoline: Y<br>name: wireguard<br>vermagic: 4.19.0-5-amd64 SMP mod_unload modversions<br><br>The same version seems to work fine on Debian Stretch (4.9.0-9) or Fedora Core 30 (5.1.11-300)<br><br>The kernel ring throws a number of symbol version errors:<br><br>[...]<br>[ 97.450944] wireguard: loading out-of-tree module taints kernel.<br>[ 97.453335] wireguard: module verification failed: signature and/or required key missing - tainting kernel<br>[ 97.457727] wireguard: disagrees about version of symbol skb_put<br>[ 97.459772] wireguard: Unknown symbol skb_put (err -22)<br>[ 97.461555] wireguard: disagrees about version of symbol ip6_dst_hoplimit<br>[ 97.463609] wireguard: Unknown symbol ip6_dst_hoplimit (err -22)<br>[ 97.465590] wireguard: disagrees about version of symbol consume_skb<br>[ 97.467495] wireguard: Unknown symbol consume_skb (err -22)<br>[ 97.469326] wireguard: disagrees about version of symbol udp_sock_create4<br>[...]<br><br>I have tried both the apt package from debian unstable, as well as compile from source.<br><br>Any idea what could be going wrong? Is this a Debian kernel bug?<br><br><br>Thanks in advance,<br><br>Nils<br> </div></body></html>